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Oxidation kinetics of a lime-copper concentrate pellet

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Abstract

Copper flotation concentrates can be oxidized while simultaneously fixing 98 pct of the sulfur as CaSO4 and copper sulfates if a mixed lime-concentrate balled pellet is roasted at low temperatures. The roasting pellet exhibits a reacted shell surrounding the unreacted core. The rate is controlled by oxygen diffusion in the pores of the roasted shell and kinetic details are given. At higher temperatures the rate decreases because of sintering and decreased porosity in the shell. Complete roasting of the pellets while controlling the pellet temperature to prevent formation of insoluble copper ferrites is required for subsequent hydrometallurgical extraction.

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References

  1. R. W. Bartlett and H. H. Haung:J. Metals, 1973, vol. 25, no. 12, pp. 28–34.

    CAS  Google Scholar 

  2. F. P. Haver and M. M. Wong:Mining Eng., 1972, vol. 24, no. 6, p. 52.

    Google Scholar 

  3. J. H. Strassberger,et al: Blast Furnace Theory and Practice, vol. 1, p. 286, Gordon and Breach Science Publishers, New York, 1969.

    Google Scholar 

  4. N. Froessling:Gerlands Beitr. Geophys., 1938, vol. 52, p. 1183.

    Google Scholar 

  5. R. L. Steinberger and R. E. Treybal:AIChEJ., 1960, vol. 6, p. 227.

    Article  CAS  Google Scholar 

  6. C. N. Satterfield:Mass Transfer in Heterogeneous Catalysis, pp. 41, 42, M.I.T. Press, Cambridge, Mass., 1970.

    Google Scholar 

  7. O. Levenspiel:Chemical Reaction Engineering, chapt. 12, J. Wiley and Sons, New York, 1962.

    Google Scholar 

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Authors and Affiliations

  1. University of Utah, Salt Lake City, UT

    H. H. Haung Post Doctoral Research Appointment

  2. Kennecott Copper Corporation, Salt Lake City, UT

    R. W. Bartlett

Authors
  1. H. H. Haung Post Doctoral Research Appointment
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  2. R. W. Bartlett
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Additional information

Formerly Graduate Student, Stanford University

Formerly Associate Professor, Stanford University.

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Haung, H.H., Bartlett, R.W. Oxidation kinetics of a lime-copper concentrate pellet. Metall Trans B 7, 369–374 (1976). https://doi.org/10.1007/BF02652707

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  • DOI: https://doi.org/10.1007/BF02652707

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